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泰德 1

泰德 1
relative sizes
估计太阳、红矮星葛利泽 229、泰德 1、棕矮星葛利泽229B、和木星的相对大小比较。
Credit: 科学美国人/Linda Huff
观测资料
历元 J2000.0
星座 金牛座
星官
赤经 3h 47m 18.0s
赤纬 +24° 22′ 31″
视星等(V) 17.76[来源请求][可疑]
特性
光谱分类M8
U−B 色指数?
B−V 色指数?
V−R 色指数?
R−I 色指数?
变星类型?
天体测定
径向速度 (Rv)? km/s
自行 (μ) 赤经:? mas/yr
赤纬:? mas/yr
视差 (π)8.40 mas
距离400 ly
(120 pc)
绝对星等 (MV)12.38[来源请求][可疑]
详细资料
质量0.052 M
半径~0.1 R
表面重力 (log g)6.6
亮度0.001 L
温度2600 ± 150[1] K
金属量?
自转?
年龄0.12 Gyr

泰德 1是第一颗被认证的棕矮星,时为1995年[2]。它是坐落于疏散星团昴宿星团内的天体,距离地球大约400光年(120秒差距)。

这颗黯淡的天体视星等是17.76等,绝对星等为12.38等。它是如此的黯淡,业余的天文望远镜口径必须够大才能看见它。

这颗天体的质量(55 ± 15 MJ)比行星巨大[1],但是比恒星(0.052 MSun)小了许多。棕矮星的半径是大约与木星相似(或是太阳的十分之一)。它的表面温度是2600 ± 150 K [1],大约是太阳的一半。它的光度是太阳的0.1%,意思是泰德 1在6个月所辐射出来的总光度,只相当于太阳在4小时所辐射的。它的年龄是大约1亿2千万年,相较之下太阳已经46亿年了。

这颗棕矮星已经热到可以在核心燃烧锂,但还没有像太阳这么热,还不能够进行的融合。

参考资料

  1. ^ 1.0 1.1 1.2 Mid-IR Observations of the Pleiades Brown Dwarfs Teide 1 & Calar 3页面存档备份,存于互联网档案馆) (Leech 2000)
  2. ^ Rebolo, Rafael, Teide 1 and the Discovery of Brown Dwarfs, Joergens, Viki (编), 50 Years of Brown Dwarfs - From Prediction to Discovery to Forefront of Research, Astrophysics and Space Science Library 401, Springer: 25–50, 2014 [2014-08-09], ISBN 978-3-319-01162-2, (原始内容存档于2015-02-19) 

外部链接

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泰德 1
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